Machine for conditioning sash bars



Feb. 121929. 1,701,602

T. S. ARCHBALD MACHINE FOR CONDITIONING SASH BARS Filed Nov. 16. 1925 2 Sheets-Sheet 1` Feb. 12, 1929.

1,701,602 T. s. ARCHIBALD v MACHINE FOR CONDITIONING SASH BARS Filed Nov. 1e, 1925 i 2 sheets-sheet 2 `Patented Feb. 172, 1929.

UNITED STATES 1,701,602 PATENT OFFICE-a:

annoncen s. AncHIBALnor MnLRosn, MAsSACHUSnTTS.

MACHINE FOR CONDITIONING SASVH BARS.

Applicaties filed November 1s, 1925. serial N0. 59,554.

rlhis invention relates to a mechanism more particularly intended. for removing oldvputty and pointsfrom sash-bars such as are used in the construction of greenhouses. Vhen greenhousesare dismantled and the glass is removed from the sash-bars, before the latter can be used again the old putty and the glaSsretaining elements or points must be thoroughly removed. As the old putty in mostcases is very hard and clings to the bars, removingby hand is tedious and time-consuming. The use lof mechanical cutters has heretofore been found impracticable, as the putty contains abrasive ingredients which quickly dull the lcutting edge of the instrument and .destroy its practical utility.

According to my invention the putty iS first subjected to crushingpressure so that it is crumbled and it is then dislodged or dug out, the glass-'retaining points being either removed or cut off. While old putty is hard and offers great resistance to a cutting edge, it erumbles under properly applied pressure, and the fragment-s are quicklyy and easily removed with but slight wear on the machine. y

An advantageous feature of the machine is the use .of ordinary milling cutters. These, being standard parts, are relatively cheap and easily obtainable. They are also easily resharpened when necessary.

A preferred embodiment of my invention is disclosed in the drawings and hereinafter described as follows:

Figure l is a plan of the complete mechanism.k y

Figure 2 is a side view of the same. Figure 3 is a sectional view taken on the line III-III in Figure 1.

Figure 4 is an enlarged detail showing the action of the crushing and cleaning wheels on .the putty and sash-bar.

Figure `5 is a kfragmentary perspective view of a conventional sash-bar before being cleaned, this type of bar being provided machine, the saslrbar, there shown being, provided with two grooves or rabb'ets. The frame 2 is provided with lugs 5 `through whichare threaded screws 6 which permit adjustment of the height and level of the frameQ. Operating on the 1upper partof the sash-,bar are wheels 7; One or more yof these wheels may be used for each groove acted vupon. l Herein are` shown two such wheels acting'v in each groove. In order to act simultaneously` on both grooves of the saslrbar, the wheels are mounted in pairs on shafts 9, spacing members 8a being employed to space the wheels of each pair from each other. vThe wheels 7 may be keyed to thek shafts 9, but in practice it is found sufiicient to clamp them tightly between sleeves 8 which may be made integral with the shafts 9 or, as shown, pinnedthereto, and nuts 9a. Loosely mounted on the sp-acing members 8 are collars 8". rlhese collars may be Vmade of such a diameter that when the machine is operating on a strip of sashbar, such as shown in Figure 5, the peripheries ofthe collars 8" will ride on theridge of the sash-bar when the teeth of the wheels 7 can just touch the bottoms ofthe grooves on either side. .of the ridge. This protects the bottoms of thegrooves of the sash-bar, since the collars. 8 bear on the ridge ofthe sash-bar and act as stops to limit the downward movement of the wheels 7 and thus prevent the teeth of the wheels 7 from indenting or injuring the sash-bar.y Collars of different length and diameter may be interchanged according to the width and height of the ridges on the sash-bars which are to be cleaned. The pressure of the two pairs of wheels yon the material acted upon is equalized by employing the Shafts 9 as end members of a rockable frame l0, having side members ll. These side members are provided with enlarged ends 12in which the ends of the members 9 are journaled. `In the machine shown on the drawings, the end pieces 9 rotate with the sleeves 8 and the wheels 7. lfpreferred, however, the end pieces 9 may be fixed inthe ends of the side members ll', the sleeves 8 and wheels 7 being assembled in such a way asto rotate onk the end member 9. The side members rl1 The shafts 14 and 15 are respectively journaled in enlarged portions 16 and 17 of side bars 18, 19 of the U-shaped frame 2O positioned outside of the frame 10. This U- shaped frame has an end bar 21 at one end and enlarged portions 22 at the other end, said portions having bearings for the main drive shaft 23. The frame 10 is thus rockvably supported by the ill-shaped frame 20,

which in turn can be about the shaft 23. f

The wheels 7 are operatively connected with driving shaft 23 in any preferred manner. Herein are shown gears 24 mounted on shafts 9, which mesh with a gear 25 mounted on a shaft 14. Shaft 14 also carries gear 26 which meshes with an idle gear 27 mounted on side bar 18. yGear 27 meshes with gear 28 fixed on drive shaft 23.

A pair of wheels 29, preferably similar to wheels 7 are mounted on shaft 23 to rotate therewith. lt will be seen from the arrangement of the gearing that wheels 7 and wheels 29 rotate in opposite direct-ions, as indicated by the arrows.

Wheels 7 and 29 are preferably provided with teeth having cutting edges, which teeth may" also be undercut. Ordinary milling cutters have been found to be admirably suited for the purposes of the device. The arrangement of the teeth of wheels 7 and 29 is preferably as shown in Figure 4. A preferred form of milling cutter suitable for use in this machine is also provided with cutting edges on the sides of the teeth as well as on their ends. lheels 7 are rotated in a direction to present the backs of the teeth to the putty on the sash-bar for the purpose of crushing the same, while wheels 29 are rotated in the opposite direction to present the cutting edges to the crushed putty and to dig under and remove the crumbled fragments. The crushing of the putt-y by the wheels 7 reduces to a minimum the wear on the teeth of wheels 29.

In order to bring the wheels 7 into operative relation with the material acted on, thel frame 2O is swung down with the assembly of members supported by it by depressing the treadle 30 pivotally supported 0n the standard 31 and connected to the frame 20 by a rod 32 which may be attached to any part of the frame. yHerein it is shown attached to an extension 33 of the end member 21.

A latch 34 is pivotally mounted on standard 35 and engages side-bar 19 to retain frame 20 in its lowered position, that is, the position in which. wheels 7 exert their maximum crushing effect.

rlhere is ordina 'ily sufficient pinching eect between wheels 7 and supporting rolls 3 to feed the bars through the machine. Additional feeding means, however, are preferably employed, comprising a pair of swung 29. The feed wheels 36 and 37 engage the ksides lof the` sash-bars, and have the further func-tion of removing any longitudinal twist that may be in the sash-bar from the portion passing through the machine. f

The feed wheels 36 and 37 are positively driven from shaft 23 by any preferred connection. Herein are shown 'gears 38 fixed to the vertical shafts 39 on 4vwhich feed rolls 36 are also fixed. The gears 38 mesh with each other and are driven by a gear 390 mounted on shaft 40, which is driven by shaft 41 through bevel gears 42 and 43. The shaft 41 `is connected by bevel gears 44 and 45 to shaft 46. On shaft 46 is a gear 47, which drives meshed gears 48. These gears, together with the rollers 37, are rcspectively mounted on vertical shafts 49. The gears and shafting connecting the feed rollers arel preferably mounted below the raised platform 1, as shown. On shaft 46 is fixed a sprocket- 50, which is connected to a sprocket 51 by chain 52. The sprocket 51 is mounted on the drive shaft 23, which is coupled at 521 to a reduction gear 53. A motor of any suitable kind, indicated at 54, is connected by the coupling 55 to the reduction gear 53.

n operating the machine, the end of the sash-bar is introduced beneath the wheels 7. As the end of the bar passes under the second p air of wheels 7, frame 2O isde-pressedby bearing down on treadle 30 and retained in its depressed position by latch 34. The machine is so arranged that the peripheral speed of wheel 7 is approximately equal to the speedfof travel of the sash-bar through the machine. As the sash-bar passes through, the backs of the teeth of wheels 7 exert crushing pressure on the putty progressively at spaced points along the bar, and the gearing connecting the first and second pairs of wheels 7 is preferably arranged so that -the points of contact of the teeth of the second pair of wheels will be substantially midway between the points of contact of the teeth of the rst pair of wheels. This insures thorough crumbling or disintegration of the putty before it passes to the cleaning wheels 29.' The latter, rotating in such a direction as to present the cutting edges of their teeth to t-he crushed putty, readily dig under and scoop out the crumbled fragments, leaving the grooves clean. l

The form of machine shown in the drawings is adapted for useV with a sash-bar having two grooves. By slight modification of the form and position of wheels 7 and 29 llt) lUO

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and supporting rolls 3, other bars or` strips with .different cross-sections, such, for example, as are shown in Figures 6 and 7, can be cleaned. i

,Vihile my invention is particularlyin tended for cleaning the glass-retaining materials from sash-bars, it is capable of other applications Wherever ya similar problem is encountered. l f

I claim:

l. In a machine for 'cleaning material from grooves of wooden sash-bars and the like, comprising means for progressively disintegrating the material, and additional means for dislodging the disintegrated material from the grooves.

2. vAin'achine for removing friable material from grooves, comprising positively rotated means for crushing the material and additional means for dislodging the crushed material from the grooves.

3. A machine for 'removing putty from grooved sash-bars, comprising means for applying crushing pressure to the putty at spaced points lengthwise of the grooves to break it into fragments, and additional means for dislodging the fragments of putty from the sash-bars.

4. In amachine for removing glass-securing materials from grooved sash-bars, means for applying crushing pressure' to the materials, means for cleaning the crushed materials from the grooves, means for feeding the sash-bars past the crushing and cleaning means, a source of power, and means operatively connecting all said means to the source of power.

5. In a machine for removing putty from sash-bars, a platform, a motor, a pair of standards mounted on the platform, a driveshaft journaled in the standards, a` reduction gear operatively connecting the drive shaft with the motor, an outer frame comprising side bars and an end bar, the side bars having in their ends remote from the end bar bearings to receivethe drive shaft Wherebythe frame is sivingable about the drive shaft, a pair of bearings at opposed intermediatev points of the side-bars, a studshaft secured in one bearing, a rotatable shaft journaled in the other bearing, an inner frame rockably supported on the studshaft and rotatable shaft and having Vend pieces on opposite sides of the rocking axis, a pair of spaced Wheels carried on each end piece, means including the rotatable shaft operatively connecting the Wheels with the drive shaft, a pair of spaced Wheels mounted on the drive shaft and aligned respectively With corresponding Wheels on the end pieces, operator actuated means for swinging the frames so as to press the frame-supported Wheels against the putty on the sash-bars, a pair of feed rolls mounted at eachend of the platform, means operatively connecting the feed rolls with kthe drive shaft, and

ymeans for supporting the sash-bars intermediate the pairs of feed rolls.

6. In amachine of thenclass described, a toothed wheel, means tor rotating the wheel,

means for supporting said Wheel in a man--` ner to permit said Wheel to be pressedthe cutter in a manner to present the backs y of the teeth to the putty to crumble the putty, a second milling cutter, and means to rotate lthe second cutter in a manner to present the cuttingedges of the teeth to the crumbled putty.

` 8. In a machine of the class described, means for ycrushing and dislodging putt-y from a sash-bar, and means for supporting the sash-bars in a position to be operated on by the crushing` and dislodging means.

9. In a machine of the class described, means for applying crushing pressure tothe putty in a groove of a sash-bar, means for supporting the sash-bar against the pressure of the crushing means, and means for cleaning the crushed puttyv from the groove.

l0. In a machine of the class described, a plurality of Wheels each having cutting teeth, means for rotatably supporting said Wheels in operative relation to thek panesecuring material in a groove of a sash-bar to act successivelyA onsaid material, means for rotating the iirstacting Wheel in a direc-4 tion to bring the back faces of its teeth against said material to crush and disintegrate the same and for rotating .a successively acting Wheel in a direction to cause its cutting teeth to dig under saidcrushed material and remove it from said groove.

1l. Ina machine of the class described, a drive shaft, a frame sivingably mounted thereon, a plurality of toothed Wheels supported by the frame, a toothed Wheel mounted on the drive shaft, the toothed wheels being positioned in a common plane, means operatively connecting the framesupported Wheels with the drive shaft, and means for supporting a sash-bar in a position to be operated on by the Wheels. y

l2. In a machine ofl the class described, a plurality of'means for successively crushing the putty on a sash-bar, and means for pressing the crushing means against the putty including means for equalizing the pressure of the several crushing means.

13. In a machine of the class described, a plurality of means for successively crushing the putty on a sash-bar, means for pressing the crushing means against the putty inlill) cluding means for equalizing the pressure ot' the crushing means, and means for clean* ing the crushed putty Jfrom the bar.

A. In a machine of the class described, a iframe swingably mounted at one end, a plurality of toothed Wheels supported by the iframe t'or successive crushing engagement with the putty on a sash-bar, means tor swinging said trame to press the Wheels against the putty, and means for equalizing the pressure of successive wheels thereagainst.

l5. In a machine oii the class described, a trame swingably mounted at one end, a plurality ot toothed Wheels supported by the frame for successive crushing engagement With the putty on a sash-bar, means for swinging the 'trame to press the Wheels against the putty, means for equalizing the pressure of successive Wheels against the putty, and means for cleaning the crushed putty 'from the bar.

1G. in a niachine of the class described, means for crushing` and dislodging the putty on sash-bars, said means comprising toothed. Wheels positioned in the same plane and rotated in opposite directions. f

17. In a machine of the class deserieed, means for crushing and dislodging the putty on sash-bars, said means comprising three pairs ot toothed Wheels'positioned in parallel planes for simultaneous operation on both sides ot a sash-bar, and means for rotating the iii-st two pairs of Wheels in one direction and for rotating the third pair in for simultaneous successive operation on the putty in opposed rabbets of a sash-bar, means tor rotating the first pair of Wheels in a direction to present the backs of the teeth to the putty to crush the same, means for rotating the last pair of Wheels in a direction to present the cutting edges ot' the teeth to digout the crushed fragments of putty, and rollers spaced from the wheels to permit the sash-bar to be passed therebetween.

20. In a machine oit the class described, rotatable means for crushing the putty on a sash-bar, means tor dislodging the crushed putty from the bar, means for feedingl the sash-bar past the crushing and dislodging means, means for rotating the crushing means with a peripheral speed substantially equal to the speed of travel o1 the sash-bar and in a direction with the motion of the sash-bar, and means for rotating the disledging means in a direction opposed to the motion of the sash-bar.

2l. ln a machine of the class described, means for crushing putty in a groove ot' a sash-bar, means for moving the crushing means into position for crushing engagement With the putty, and means for retainingthe crushing means in such position.

22. ln a machine ot the class described, a

ter in the opposite direction to cause the cutting edges of the teeth to dig under the crushed fragments of putt-y. c

In testimony whereof I have affixed my signature.

THEODORE S. ARCHIBALD. 

